Hi all,
I have a project at my school and i need to create a circuit that through some switches creates some shorts on the CAN BUS.For example if I press on SWITCH1 in state A , I will create a short between CANH-CANL ,if i press on SWITCH 1 on the other state I will create a short between CANH-GND,
For SWITCH2,SWITCH3 etc other combinations: CANL-GND, CANH-CANL-GND , CanH- VDD(12 V) and CanL-VDD(12 V).
So i already done the PCB ,the simulations and now I want to test it.And there are some issues.
1)If i do not have a car ECU can I do the tests with a signal generator,and osciloscop just to check if the shorts occurs?
( if the ECU works the same way as the signal generator )
2) very important, what is the aplicability because the teacher told me that if you do some shorts on CAN the ECU.The frames will recover in a few seconds after you eliminate the short.I was wonder what can be the aplicability in this device (i did not find it on the internet) , because if we eliminate the shorts on any circuit( if the device is protected to big currents) will work after that just the same.If you know or you can provide me any documents about this process in the ECU ,it will mean a lot to me.
Thank you very much and i hope someone can help me with some answers.
Mod edit: cleaned up title for clarity - JohnInTX
I have a project at my school and i need to create a circuit that through some switches creates some shorts on the CAN BUS.For example if I press on SWITCH1 in state A , I will create a short between CANH-CANL ,if i press on SWITCH 1 on the other state I will create a short between CANH-GND,
For SWITCH2,SWITCH3 etc other combinations: CANL-GND, CANH-CANL-GND , CanH- VDD(12 V) and CanL-VDD(12 V).
So i already done the PCB ,the simulations and now I want to test it.And there are some issues.
1)If i do not have a car ECU can I do the tests with a signal generator,and osciloscop just to check if the shorts occurs?
( if the ECU works the same way as the signal generator )
2) very important, what is the aplicability because the teacher told me that if you do some shorts on CAN the ECU.The frames will recover in a few seconds after you eliminate the short.I was wonder what can be the aplicability in this device (i did not find it on the internet) , because if we eliminate the shorts on any circuit( if the device is protected to big currents) will work after that just the same.If you know or you can provide me any documents about this process in the ECU ,it will mean a lot to me.
Thank you very much and i hope someone can help me with some answers.
Mod edit: cleaned up title for clarity - JohnInTX
Last edited by a moderator: